Section 1


Temperature: a measure of the average kinetic energy of the particles of an object.
Thermal Energy: the sum of the kinetic and potential energy of all the particles in an object.
Heat: thermal energy that flows from something at a higher temperature to something at a lower temperature.
Specific Heat: the amount of heat that is needed to raise the temperature of 1 kg of some material by 1°C.

Section 2


Conduction: the transfer of thermal energy by collisions between particles in matter.
Convection: the transfer of thermal energy in fluid by the movement of warmer and cooler fluid from place to place.
Radiation: the transfer of enerdy by electromagnetic waves.
Insulator: a material in which heat flows slowly.

Section 3


Solar Collector: panels that absorb radiant energy from the sun.
Thermodynamics: thermal energy, heat, and work are related,and the study of the relationship among them.
First Law of Thermodynamics: the increase in thermal energy of a system equals the work done on the system plus the heat transferred to the system.
Second Law of Thermodynamics: it is impossible for heat to flow from a cool object to a warmer object unless work is done.
Heat Engine: a device that converts heat into work.
Internal Combustion Engine: fuel is burned inside the engine in chambers of cylinders.